1 files changed, 66 insertions, 0 deletions
diff --git a/Swift/QtUI/QtClosableLineEdit.cpp b/Swift/QtUI/QtClosableLineEdit.cpp
new file mode 100644
index 0000000..033db78
--- /dev/null
+++ b/Swift/QtUI/QtClosableLineEdit.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2014-2015 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+
+/* Contains demo Trolltech code from http://git.forwardbias.in/?p=lineeditclearbutton.git with license: */
+/****************************************************************************
+**
+** Copyright (c) 2007 Trolltech ASA <info@trolltech.com>
+**
+** Use, modification and distribution is allowed without limitation,
+** warranty, liability or support of any kind.
+**
+****************************************************************************/
+
+#include <Swift/QtUI/QtClosableLineEdit.h>
+
+#include <QApplication>
+#include <QKeyEvent>
+#include <QStyle>
+#include <QToolButton>
+#include <QtGlobal>
+
+namespace Swift {
+
+const int QtClosableLineEdit::clearButtonPadding = 2;
+
+QtClosableLineEdit::QtClosableLineEdit(QWidget *parent) : QLineEdit(parent) {
+    clearButton = new QToolButton(this);
+    clearButton->setIcon(style()->standardIcon(QStyle::SP_TitleBarCloseButton));
+    clearButton->setIconSize(QSize(16,16));
+    clearButton->setCursor(Qt::ArrowCursor);
+    clearButton->setStyleSheet("QToolButton { border: none; padding: 0px; }");
+    clearButton->hide();
+    connect(clearButton, SIGNAL(clicked()), this, SLOT(handleCloseButtonClicked()));
+    connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(updateCloseButton(const QString&)));
+    int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
+    setStyleSheet(QString("QLineEdit { padding-right: %1px; } ").arg(clearButton->sizeHint().width() + frameWidth + 1));
+    QSize minimumSize = minimumSizeHint();
+    setMinimumSize(qMax(minimumSize.width(), clearButton->sizeHint().width() + frameWidth * 2 + clearButtonPadding),
+                                qMax(minimumSize.height(), clearButton->sizeHint().height() + frameWidth * 2 + clearButtonPadding));
+}
+
+void QtClosableLineEdit::resizeEvent(QResizeEvent *) {
+    QSize size = clearButton->sizeHint();
+    int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
+    int verticalAdjustment = 1;
+#if defined(Q_OS_WIN32)
+    // This vertical adjustment is required on Windows so the close button is vertically centered in the line edit.
+    verticalAdjustment += 2;
+#endif
+    clearButton->move(rect().right() - frameWidth - size.width(), (rect().bottom() + verticalAdjustment - size.height())/2);
+}
+
+void QtClosableLineEdit::updateCloseButton(const QString& text) {
+    clearButton->setVisible(!text.isEmpty());
+}
+
+void QtClosableLineEdit::handleCloseButtonClicked() {
+    clear();
+    QApplication::postEvent(this, new QKeyEvent(QEvent::KeyPress, Qt::Key_Escape, Qt::NoModifier));
+    QApplication::postEvent(this, new QKeyEvent(QEvent::KeyRelease, Qt::Key_Escape, Qt::NoModifier));
+}
+
+}